Shiara Davila-Morales, spokeswoman for the Los Angeles County District Attorney’s Office, said Van Bui pleaded not guilty to two counts of sexual penetration by a foreign object, two counts of forcible rape and one count of forcible oral copulation at his Sept. 6 arraignment.

He returns to Alhambra Superior Court on Sept. 26 for a bail hearing. Davila-Morales said Van Bui is also scheduled for an Oct. 4 court appearance to set a date for his preliminary hearing.

Van Bui is being held at the Pitchess Detention Center North Facility in Castaic on $1.5 million bail.

Anyone with information on the case is asked to call the Monterey Park Police Department at 626-307-1236.